<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #p1{color: green}
        .c1{color: blue}
        h1,h2{background-color: yellow}
        input[type='password']{background-color: red}
        *{
            border: 1px solid red;
        }
    </style>
</head>
<body>
<p id="p1">张学友</p>
<p class="c1">刘德华</p>
<p>郭富城</p>
<h1 class="c1">悟空</h1>
<h1>八戒</h1>
<h2>刘备</h2>
<input type="text">
<input type="password">
</body>
</html>